Interlocking plaster board



F. H. BLANCHARD INTERLOCKING PLASTER BOARD oct. 5, 1925. 'l y l 1,555,554

Filed Nov. 20, 1924 Patented fct. 6,4 19,25.

UNITED STATI-:s

PA-f'ilzu'rI orricls.l 7

FRED n. BLANcHAnD, or Los ANGELES, cALIFoiiNIA.

INTERLOCKING :BLASTER BOARD.

Application :led November 20, 19214. Serial No. 751,076.

To all whom t may concern.'

`Be it known that I, FRED H. BLANCHARD, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles grouted or pointed up. When the walls are so formed there are usually long unbroken vert-ical or. horizontal joints, and in the course of time, because of these long un-4 broken jointsthe joints pull apart cr separate, so that cracks are formed between the long joints.

It is an object of this invention to provide laster board sections which may be assemb ed in forming a wall, which sections will be of such shape and may -be so arranged that both vertical and horizontal joints are broken. In this manner, a long unbroken joint is done away with and the 'disadvantage of the joints pulling apart or separating is eliminated.

With the foregoing and other objects in view which will be made manifest in the following detailed description and pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, where- 1n:

Figure 1 is a front elevation of a wall formed of one type of plaster board sections;

Fig. 2 is a front elevation of a wall formed of a modified type' of plaster board sections;

Fig. 3 is a perspective view of one of the plaster board sections employed in forming the wall shown in Figfl; and

Fig. 4 is a perspective view showing one of the plaster board sections` employed in forming the wall shown in Fig. 2.

Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, the wall 1 apart.

shown in Fig. 1 consists of a plurality of vertical studs lOwhich are equally spaced Thev usual distance that the studs 10 are spaced apart is about sixteen inches. Uponthe studslO are secured a plurality of sections of plaster board indicated at 11. Each of the plaster board sections l1 is T- shaped in form and consists of arms l2 and 13, which are disposedat right angles to each other. Both of the arms 12 and 13 are in width substantially equal to the distance between the centers of the studs 10.

As shown in Fig. 1, the plaster board seci tions 11 are arranged in vertical courses. vThe lower edge 14 ofa plaster board section is placed adjacent the Hoor and the lower edge 14 of the next above plaster board section rests upon the upper edge 15 of the arm 13, and in a slmilar manner a-.tlurd plaster board section 11 may be placed up- 'onthe upper edge 15 of the second plaster board section. In the next course the lower edge 15 rests upon the intermediate horizontal edges 16 of the plaster board sections upon each side of that course. By 4forming a wall in such a manner, it will be noted that both horizontal and vertical joints are broken. It will be neted that at the bottom of the second and fourth courses there remain small rectangular blocks or sections indicated at 17, and upon the tops of certain courses there are positioned rectangular sections 18. The sections 18 constitute merely the arm 12 of one of the plaster board sections, and the'squared sections 17 constitute merely the arm 13 of one ofthe plaster board sections 11, so that the workman in assembling the wall may cut one of the plaster board sections 11 across the arm 13 even with the edges 16 and in this manner form both the extra pieces 17 and 18 without wasting the material. Then the plaster board sections are assembled upon the studs 10, the joints between the sections may be pointed up or grouted, 'and because of the fact that there are no long horizontal or vertical joints, the joints will not pull apart orcrack. y Y

In the modication shown in Fig. 2, L- shaped sections 2O are mounted upon the studs 10. These L-shaped sections may be arranged in diagonal courses and each of the sections is formed of an arm 21 and a second arm 22, which arms are disposed at right angles to each other and are, preferably,

- are unbroken.

equal in width to the distance between the centers of the studs 10. The sections are so arranged that one of the long edges 23 is disposed horizontally and that another of the long edges 24 is disposed vertically. The apex 25 may be directed -up- Wardly and toward the right or left as desired with the apex ot' the next succceding section `fitting within the recess 2G formed upon each section. When the wall is assembled, as shown in Fig. 2, no horizontal or vertical joints will remain which It will be noted that around certain edges of this wall, rectangular sections 27 will have to be provided and upon certain other edges of the wall square sections 28 will be provided. The plaster board section Q may be cut so as to sever the arm 21 from the arm' 22 and in this manner form both of the sections 27 and Q8 without waste. This wall 'may be pointed up or grouted in the same manner as shown in Fig. l, and because of the fact that no horizontal or vertical joints remain which are unbroken, the wall will not pull apart or crack.

It will be noted that all of the corners upon either of the plaster board sections ll or are right angles, and that the width of A each of the arms of both sections of plaster board is equal, and substantially equal to the distance between the studs 10. Furthermore, each of the plaster board sections has cach of its corners secured to a stud so that each ot the sections are firmly secured to the studs in forminor the wall.

' The L-shaped Section of plaster board shown in Fig. 4 may be easily and simply defined as consisting of a square or rectangular body portion, upon two adjacent sides of which are formed square or rectangular projections. In the T-shaped plaster board section, as shown in Fig. 3, this section may be simply defined as consisting of a square or rectangular body portion, on three sides of which are formed square or rectangular projections.

Obviously these sections may be arranged in various other manners, such as placing the sections upside down with respect to the manner shown, and that a combination of T-shaped and L-shaped sections may be arranged in forming a wall in which the verti, cal and horizontal joints are broken.

It Will be understood that various changes in the detail of construction may be made without departing from the spirit or scope of the invention as defined by the appended claims.

`I claim:

l. A wall comprising equally spaced studs, and angular sections of plaster board secured to said studs, said sections being ot' such shape and so arranged that vertical as well as horizontal joints are broken.

2. A wall comprising equally spaced studs, and angular sections of plaster board secured to said studs, every corner of each section being secured to one of said studs, said sections being so shaped and so arranged that vertical and horizontal joints are broken.

3. A wall comprising equally spaced studs, and angular sections of plaster board secured to said studs, each section including two arms disposed at right angles to each other, said sections being so arranged that vertical and horizontal joints are broken.

4. A wall comprising equally spaced studs, angular sections of plaster board secured to said studs, each section including two arms disposed at right angles to each other, each arm being of a Width equal t-othe distance between said studs, each corner or' each ot' said sections being a right angle, and means for securing each corner of each section to a stud, said sections being so arranged that vertical and horizontal joints are broken.

5. A plaster board section having a square i body, upon two adjacent sides of which are formed square projections of the same size as the body, whereby a plurality of such sections may be assembled to forni a wall in which vertical as Well as horizontal joints.

are broken.

6. A plaster board section having a square body, upon three sides of which are formed square projections of the same size as the body, whereby a plurality of such sections may be assembled in such a manner that vertical as well as horizontal joints are broken:

In testimony whereof I have signed my name to this specication.

FRED H. BLANCHARD. 

